Answer:
A. She changes the point of view of the story from 1st to 3rd person narrative.
Step-by-step explanation:
One of the devices the author used to advance the plot in the chapter “The Reservoir Shack: An Aside?” is by changing the point of view of the story from the 1st person to 3rd person narrative.
In an aside, the author assumes the perspective of her brother-in-law Kaz, the foreman of a reservoir crew, and one of the few people allowed to work outside the camp. With this, the author is able to describe the experience they faced when they went to attend the reservoir.